That would depend on one's definition of sensible:
1 To ask for evidence or proof before believing a phenomenon to be true
2 To believe whatever makes one feel nice, regardless of evidence.

I can see why you might think that I am being daft to insist on evidence. After all, you are happy as a pig in **** to believe as you do without evidence, Who's the more foolish - the happy idiot or the miserable genius???